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Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Please use at least two string functions of your choosing from chapter-10 (The book is Starting Out with C++ from Control Structures to Objects 9th Edition). Please read the encrypted code from an input file to save time. 

Thank you!

code for thr ming Project 7 or 8 with no changes. 11. Your country is at war and your enemies are using a secret code to com municate with each other. You have managed to intercept a message that reads as follows: :mmZ\dxZmx] Zpgy The message is obviously encrypted using the enemy's secret code. You have just learned that their encryption method is based upon the ASCII in a string are encoded using this system. For example, the letter "A" is code. Appendix 3 shows the ASCII character set. Individual characters encoded using the number 65 and "B" is encoded using the number 66. Your enemy's secret code takes each letter of the message and encrypts it as follows: if (original Char+key > 126) then encrypted Char = 32+ ((original Char + key) - 127) bloode else encrypted Char = (original Char + key) For example, if the enemy uses key = 10 then the message "Hey" would be encrypted as: "eld" nuoning
Transcribed Image Text:code for thr ming Project 7 or 8 with no changes. 11. Your country is at war and your enemies are using a secret code to com municate with each other. You have managed to intercept a message that reads as follows: :mmZ\dxZmx] Zpgy The message is obviously encrypted using the enemy's secret code. You have just learned that their encryption method is based upon the ASCII in a string are encoded using this system. For example, the letter "A" is code. Appendix 3 shows the ASCII character set. Individual characters encoded using the number 65 and "B" is encoded using the number 66. Your enemy's secret code takes each letter of the message and encrypts it as follows: if (original Char+key > 126) then encrypted Char = 32+ ((original Char + key) - 127) bloode else encrypted Char = (original Char + key) For example, if the enemy uses key = 10 then the message "Hey" would be encrypted as: "eld" nuoning
Character H e y ASCII code 72 101 121 Programming Projects Encrypted H= (72+ 10) = 82 = R in ASCII Encrypted e (101 + 10) = 111 = o in ASCII Encrypted y = 32 + ((121 + 10) - 127) = 36 = $ in ASCII Consequently, "Hey" would be transmitted as "Ro$." Write a program that decrypts the intercepted message. The ASCII codes for the unencrypted message are limited to the visible ASCII characters. You only know that the key used is a number between 1 and 100. Your program should try to decode the message using all possible keys between 1 and 100. When you try the valid key, the message will make sense. For all other keys, the message will appear as gibberish. The time should be
Transcribed Image Text:Character H e y ASCII code 72 101 121 Programming Projects Encrypted H= (72+ 10) = 82 = R in ASCII Encrypted e (101 + 10) = 111 = o in ASCII Encrypted y = 32 + ((121 + 10) - 127) = 36 = $ in ASCII Consequently, "Hey" would be transmitted as "Ro$." Write a program that decrypts the intercepted message. The ASCII codes for the unencrypted message are limited to the visible ASCII characters. You only know that the key used is a number between 1 and 100. Your program should try to decode the message using all possible keys between 1 and 100. When you try the valid key, the message will make sense. For all other keys, the message will appear as gibberish. The time should be
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